Annie needs $30 to buy a coat. she has saved $12 and plans to work as a babysitter to earn $6 per hour. which inequality shows the minimum number of hours, n, that annie should work as a babysitter to earn enough to buy the coat?
12 + 6n ≤ 30, so n ≤ 3
12 + 6n ≥ 30, so n ≥ 3
6n ≥ 30 + 12, so n ≥ 7
6n ≤ 30 + 12, so n ≤ 7

(B)12 + 6n ≥ 30, so n ≥ 3

Step-by-step explanation:

Annie already has $12

Let n be the number of hours she needs to work

If she earns $6 per hour

Her Income in n hours = $6 X n =$6n

Total Amount Annie has = 12 + 6n

Since she needs $30 to buy a coat, her total income must not be less than $30.

Therefore:

is the inequality which shows minimum number of hours, n, that Annie should work as a babysitter to earn enough.

Next, we solve for n.

Divide both sides by 6

c

step-by-step explanation: easy math

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