Aschool basketball team has an expense account and a fundraising account. after tt weeks, the balance of the expense account is (400−40t)(400−40t) dollars and the balance of the fundraising account is (150+32t)(150+32t) dollars. a. write an expression in simplest form that represents the total amount (in dollars) in both accounts after tt weeks. an expression is ( 550−72t) dollars. b. what is the total amount (in dollars) in both accounts after 12 weeks? amount after 12 weeks: $

a. 550-8t

b. 454 dollars

Step-by-step explanation:

a. Calling t the number of weeks, the balance in the first account is

while the balance in the second account is

So, the total amount in both accounts is the sum of the balances of the two accounts:

b. To find the total amount in both accounts after 12 weeks, we just need to substitute t=12 into the total balance, and we find:

answer: 0.95, d

step-by-step explanation:

first, you have to combine the percentages of costumers ordering pizza or salad. 25% (percent of salads ordered) plus 70% (percent of pizzas ordered) is equal to 95%. then, turn 95% into a fraction: 95/100. lastly, divide 95 by 100 and you will get 0.95, d.

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15