Choose the best definition for the term: variable

a: a letter that holds the place for some unknown value in mathematics

b: a process where you must look for terms that have identical variable parts and then combine their coefficients

c: a process where if two things are equal, one can be put in the place of the other and nothing will change

d: terms that have identical variable parts

it will be a cylinder. with a diameter of 8 and 4 single pieces high

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