Suppose you earned 7t – 1 dollars on Monday and 8t + 5 dollars on Tuesday. What were your total earnings? Simplify your answer.
A. –t + 4 dollars
B. –t – 6 dollars
C. 15t – 6 dollars
D. 15t + 4 dollars
To find the total earnings, we add the earnings from Monday and Tuesday:
Total Earnings = (7t - 1) + (8t + 5)
Total Earnings = 15t + 4
Therefore, the answer is D. 15t + 4 dollars.
To find the total earnings, you need to add the earnings from Monday and Tuesday.
On Monday, you earned 7t – 1 dollars.
On Tuesday, you earned 8t + 5 dollars.
To find the total earnings, you add these two expressions:
Total earnings = 7t – 1 + 8t + 5
Now, simplify the expression by combining like terms:
Total earnings = (7t + 8t) + (-1 + 5)
= 15t + 4
Therefore, the total earnings are 15t + 4 dollars.
So the correct answer is D. 15t + 4 dollars.
To find the total earnings, we need to add the earnings from Monday and Tuesday.
The earnings on Monday are given by 7t - 1 dollars.
The earnings on Tuesday are given by 8t + 5 dollars.
Adding these two expressions, we get:
(7t - 1) + (8t + 5)
To simplify, we combine like terms:
7t + 8t - 1 + 5
Combining like terms further, we get:
15t + 4
Therefore, the total earnings are 15t + 4 dollars. The correct answer is D. 15t + 4 dollars.