Answer:
59.049%
Step-by-step explanation:
J. J. Redick is an excellent free throw shooter and makes 90% of his free throws
P(making one free throw) =90%
Therefore:

X=price of one jumbo popcorn
y=price of one chocolate chip cookies
$5.00=$5.00(100 cts / $)=500 cts
$6.00=$6.00(100 cts / $)=600 cts
We suggest this system of equations:
x+2y=500
x+4y=600
we solve this system of equations by reduction method.
-(x+2y=500)
x+4y=600
----------------------
2y=100 ⇒ y=100/2=50
x+2y=500
x+2(50)=500
x+100=500
x=500-100
x=400
solution: one chocolate chip cookie cost 50 cts.
Answer: 80
Step-by-step explanation: multiple b(3) with everything its next to, then add it all up
0.28 and 7/25................