Jack is thinking of a number, which he calls n. He adds 4 to the number and then doubles the sum. * 10 points
n (2 + 4)
2n +4
2 (n +4)
(n +2)²
Emily is thinking of a number, which she calls n. She finds 1/4 of a number and then subtract 3. *
10 points
1/4 -3
(1/4)n -3
3 - 1/4n
3n -1/4
The expression 2( n+ 9) represents Steve's final number. Steve's starting number n is 5. What is Steve's final number? *
10 points
26
28
30
16
The expression 3( 2n+ 4) represents Mark's final number. Mark's starting number n is 8. What is Mark's final number? *
10 points
42
72
48
60
At Cycle and Sport, customers can rent bikes, electric scooter, kayak, canoes, or paddleboards by the hour. Kenny rents a bike and a helmet. The expression 9b +6 represents the total cost to rent the bike for b hours, plus the fee for the helmet. What does the term 9b represent? *
10 points
the cost to rent a helmet
the number of hours
the cost to rent a bike
the total cost, including the helmet rental
Which expression represents the total cost for Peter to rent a bike for b hours and Meg to rent a scooter for s hours. *
10 points
Captionless Image
9 + 10 • b + s
9 + 10
9b + 10s
(9 + b) + (10 + s )
Which expression represents the total cost for Peter to rent a bike for b hours and Meg to rent a scooter for s hours. Peter rents the bike for 4 hours, and Meg rents the scooter for 3 hours. What is the total cost of the rentals. *
10 points
Captionless Image
$ 76
$ 19
$ 67
$ 66
At the Ski Shack, customers can rent skis, snowboards, boots, and poles by the day. Ann is renting a snowboard. Lucy has her own skis, but she needs to rent boots. Which expression represents the total cost for Ann to rent a snowboard for s days and rent boots for b days? *
10 points
Captionless Image
52s + 30b
30s + 48b
52 + 30
none of the above
At the Ski Shack, customers can rent skis, snowboards, boots, and poles by the day. Ann is renting a snowboard. Lucy has her own skis, but she needs to rent boots. Ann rents the snowboard for 4 days. Lucy rents the boots for 5 days. What is the total cost of the rentals? *
10 points
Captionless Image
$ 258
$ 358
$ 368
$ 386
At the Ski Shack, customers can rent skis, snowboards, boots, and poles by the day. Amanda is renting skis and poles. She has a coupon for $18 off. Which expression represents the total cost for Amanda to rent skis for s days and poles for p days? *
10 points
Captionless Image
48s + 12p -18
s(48 + 12) - 10
48 +12 - 18
48s + 12p + 18