Answer:
C) 24
Step-by-step explanation:
we know that 18 students is 75% of the class and we need to know 100% of the class. to calculate this, divide the 18 students by 75% to work out what 1% of the students equals:
18 ÷ 75 = 0.24
0.24 students = 1% of the class. multiply this number by 100 to calculate 100% of the class:
0.24 x 100 = 24
∴ there are 24 students in Ms. Perron's class
I hope this was helpful :-)
Answer:

Step-by-step explanation:
Given

Required
Express as scientific notation
The rule of scientific notation is that:
It is represented in form of:
where 
will be represented as: a = 2.403; notice that the point was shifted forward by 3 units.
So:
n = -3
The equation becomes:


Approximate

It would be $480. If it was sold at $120 and was reduced by 1/4, you would multiply 120 by 4, giving you 480.
Y=7x+3
They are parallel so the slope is the same and plug in the two coordinates to get the y intercept. This gives you y=7x+3