Maria burns about 600 calories per hour jogging and about 450 calories per hour biking if Maria spends x hours per day biking and 4/5 as much time jogging which of the following functions best models the amount of calories C that Maria burns in one day form jogging and biking A) C(x) =840x
B) C(x) = 930x
C) C(x) = 960x
D) C(x) =1050x

C)

Step-by-step explanation:

The answer is C) because as 600 times x equals 600x, and 4/5x times 450 is 360x, 600x+360x=960x. The function is C(x)=960x

Hope it helps!

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!