If a train travels at 110mph for 12 min , what is the distance traveled

tis noteworthy that an hour has 60 minutes and thus 12 minutes is really just 12/60 of an hour, namely 1/5 hr, the rate in this case is in mph, so is using hours in it, thus we need the time to be in hours as well.

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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