The admission fee at a county fair is $2 for children and $4 for adults. Suppose that on the last day, 1600 people enter the fair and $5000 is collected.

Choose the two equations that can be solved as a system of equations to determine how many children and how many adults attended the fair.

a − c = 1600
4a + 2c = 5000
4a − 2c = 5000
a + c = 1600

The weights of players in a basketball league are distributed normally. the distance (d) of each player's weight (w) from the mean of 86 kilograms was computed as follows: d = |w - 86| if d is greater than 7 for approximately 5% of the players, what is the approximate standard deviation of the players' weights? a. 1.75 kilograms b. 3.5 kilograms c. 4.3 kilograms d. 7 kilograms

Which ordered pair is a solution of the equation? y + 5 = 2(2+1) choose 1 answer ® only (5,10 ® only (-1,-5) © both (5, 10) and (-1,-5) 0 neither

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.