I really NEED help! Question 1-
Super Sally works every day in the school office and earns $57 per day. Lazy Petunia shows up to work fewer than half as many days as Sally, and earns only $20 per day. At the end of the school year, their total earnings are $7733. The number of days that Petunia worked is closest to a) 20 b) 30 c) 40 d) 50 e) 60

Question 2-
How many 4 digit even numbers can be formed using 0,1 , 5,6, 7, 8 and 9 if repeats of digits are not allowed?
A) 120 B) 240 C) 320 D) 360 E)480

Question 3- The value of 28^983 x 98^984/14^2948
A) 98 B)392 C)784 D) 1372 E)2744
/=division
THANK YOU SO MUCH in advance!

The number of days Super Sally and Lazy Petunia work are illustrations of simultaneous equations

(a) Super Sally and Lazy Petunia

Represent their earnings with the first letters.

So, we have:

-- number of days

--- the total earnings

Make S the subject in

Substitute 2L for S in

Expand

Add

Divide both sides by 134

From the options, the closest to 57.7 is 60.

Hence, the number of days that Petunia worked is closest is 60

(b) 4 digit even numbers

The digits are given as: 0, 1, 5, 6, 7, 8 and 9

To create a 4-digit number, the first digit cannot be 0.

So, the first digit can be any of the remaining 6

Because, it is an even number, the number can only end with 0, 6 or 8

So, the last digit can be any of the 3

Since there is no repetition, the second and the third digits can be any of the remaining 5 and 4 digits, respectively.

So, the number of digits is:

Hence, the number of digits is (d) 360

(c) The value of 28^983 x 98^984/14^2948

Rewrite the expression as:

Express all number as a base of 14

Apply law of indices

Evaluate all products

Evaluate the exponent

Hence, the result of is

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  n=   0.0000 - 0.3750 i  

  n=   0.0000 + 0.3750 i

step-by-step explanation:

one of these should be correct

0.038

step-by-step explanation: