The answer is 9
first of all you solve the small brackets, then the bigger brackets, after that you solve the multiplication and division, then finally you solve the addition and subtraction
[ 15 ÷ (7-4) + 2 ] + 6 ÷ 3
[ 15 ÷ (3) + 2 ] + 6 ÷ 3
[ 5 + 2 ] + 6 ÷ 3
[7] + 6 ÷ 3
7 + 2
9
Answer
x=-2 and y=-3
Step-by-step explanation:
Step: Solvey=5x+7for y:
Step: Substitute5x+7 for y in 3x+y=−9:
3x+y=−9
3x+5x+7=−9
8x+7=−9(Simplify both sides of the equation)
8x+7+−7=−9+−7(Add -7 to both sides)
8x=−16
8x/8=−16/8
(Divide both sides by 8)
x=−2
Step: Substitute−2 for x in y=5x+7:
y=5x+7
y=(5)(−2)+7
y=−3(Simplify both sides of the equation)
This is after graphing the equation.
Answer:

Step-by-step explanation:
Given

per hour


Required
Derive an expression for the scenario
A tandem bike allows 2 individuals to ride on it at a time.
So, they will only pay for one rental fee because both can ride on it at the same time.
However, they need to get separate helmets.
For Helmets, they will spend:

For Rental, they will spend
for h hours.


Recall that they have just $80 to spend
So, substitute 80 for total

Hence, option C answers the question.