Mary and roberto go to the movies. they buy a large popcorn for $8.50, and two medium sodas for $4.25. how much did they spend altogether, if there was a 7.89% tax? create two equations to solve

$19.15

Step-by-step explanation:

Equation 1: 8.50+4.25+4.25= 17.00  (price of the popcorn and drinks)

Equation 2: 17.00/7.89= 2.15                       (how to find how much the tax is)

Solve: 17.00+2.15=19.15                     (add the tax to how much the popcorn and drinks were)

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64