You are remodeling your home and have selected the following tiling pattern for your kitchen backsplash. Note that all the tiles, regardless of color, are the same size and shape. Your tile professional is almost done with laying the backsplash, but there is one row left to complete; unfortunately, your tile professional ran out of tiles, so you need to purchase more tiles from the store. This missing row is 99 tiles across. How many black tiles do you need to complete the pattern

step-by-step explanation:

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your answer is  

a.

5

step-by-step explanation:

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