Answer:
f(7) =5
Step-by-step explanation:
f(x) = x - 2
f(7) means let x = 7
f(7) = 7-2
f(7) =5
Answer:
he bought 20 hard cover and
he bought 15 paper back
Step-by-step explanation:
3x20= 60
2x15= 30
90
Answer:
You can find the answer by using the formula t=-b/2a
Step-by-step explanation:
Remember the maximum height will be at the vertex. The x value of the vertex is your time, so use x=-b/2a except that t is your x. Then if it had also asked what the height was, you would plug that answer into your equation to find the y value of the vertex. Pretty sure your teacher is just asking you to find the x though:)
Answer:
1 hour
Step-by-step explanation:
it depends on speed of light
Answer:
17+5=17+5
No matter what order you put them it will always be the same