The function f(x) = 60 + 10x represents a test score, f(x), of a student studying x hours for a test. The student studies for no more than 3 hours. What is the range of the function?

(0,90)

Step-by-step explanation:

Given data

The function f(x) = 60 + 10x

x= 3 hours

The range is a set of values for f(x) for a corresponding value value for x

f(3) = 60 + 10(3)

f(3) = 60 + 30

f(3) = 90

We can say the domain of her study time is between (0,3) hours

While the Test score is in the range (0,90)

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.

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