<em>f(-4) = 13</em>
- <em>Step-by-step explanation:</em>
<em>Hi there ! </em>
<em>f(x) = 0.5x + 15</em>
<em>replace x = - 4</em>
<em>f(-4) = 0.5×(-4) + 15</em>
<em>= - 2 + 15</em>
<em>= 15 - 2</em>
<em>= 13</em>
<em>Good luck !</em>
1. Equation: 4x + 6y = 40
Answer:!4x + 6y - 40 = 0
2x + 3y - 20 = 0
2. Equation: 2x + 6y = 26
Answer: 2x + 6y - 26 = 0
x + 3 y - 13 = 0
That mean's in total there are 5 tests
5*90 =450 so his total score on the 5 tests should be greater then or equal then 450.
79+94+91+92
356
Let's say x= the last test score
356+x>=450
subtract 356 from both sides
x>=94
The lowest score Sherman can get on his final test is 94.
Answer:
The height of the second tree is 150ft.
Step-by-step explanation:
Well you have to set it up as a proportion, so
7 = 210
5 = x
Then you cross multiply, 7 times x is 7x, and 210 times 5 is 1050.
Now you have 7x = 1050
Then you divide 1050 and 7x by 7.
And the final answer is x = 150ft