3. At the Bonneville fish hatchery, 36 salmon were observed swimming upstream during a 5-hour time period. Write a proportion that could be used to estimate the expected
number of salmon that would be observed swimming upstream in a 12-hour time period 

yes

step-by-step explanation:

they have to be opposite and reciprocal of eachother.

a) at most means it can cost $12 or less

so the inequality sign would be ≤

you would then need to multiply the number of toppings by the 0.35 for each one and add it to the cost of the cheese pizza.

the equation would be 9.99 + 0.35x ≤ 12

b) using the above equation:

9.99 + 0.35x ≤ 12

subtract 9.99 from each side:

0.35x ≤2.01

divide both sides by 0.35:

x ≤ 2.01 / 0.35

x ≤5.74

at most you could have 5 toppings.

the 5 topping pizza would cost: 0.35 x 5 = 1.75 + 9.99 = $11.74

the answer is 9 because the question is telling how much it be together.