Answer:
0.25 is the answer you just move the decimal of the percentage to the left 2 spaces
Answer:
The first three are functions
Step-by-step explanation:
4th one fails the Vertical line test.
Answer:
amplitude = 3
Step-by-step explanation:
The standard form of a cosine function is
f(x) = a cos(bx + c) + d
amplitude = | a |, period = 
phase shift = - 
, d is the vertical shift
Given the above function, then
amplitude = | - 3 | = 3
Answer:
(20 - 13.75) / 5 = ?
$1.25 per bag of chips
Step-by-step explanation:
$20.00 - $13.75 = 6.25 was spent on chips total
$6.25 / 5 people = $1.25 per person (or per bag of chips)
(20 - 13.75) / 5 = ?
The way way to solve this problem is to write an equation. "4 more" means that you are adding 4. "twice a number" means that you are multiplying a variable (lets name the number x) by 2.
Your equation would be
2x+4=8
The first thing you do is subtract 4 from both sides
2x=4
Finally, divide by two to find out what the unknown number
x=4
The number is 4
The equation is 2x+4=8
