Question

the equation c = 84t + 1923 can be used to estimate the average cost of tuition and fees at two - year public institutions of higher education, where t is the number of years since 2005. a) what was the average cost of tuition and fees in 2007? in 2012? b) for what years will the cost of tuition and fees be more than $2500? a) in 2007, the average cost of tuition and fees was $2091. (round to the nearest whole number.) in 2012, the average cost of tuition and fees was $ (round to the nearest whole number.)

Explanation:

Step1: Calculate t for 2012

2012 - 2005 = 7, so t = 7.

Step2: Substitute t into the equation

Substitute t = 7 into C = 84t + 1923, we get C = 84×7+1923.
First, calculate 84×7 = 588.
Then, C = 588 + 1923 = 2511.

Answer:

2511