(50 Points & Brainliest, please show work)

The function f(x) = 2x + 210 represents the number of calories burned when exercising, where x is the number of hours spent exercising.

The function g(x) = 2x + 125 represents the calorie deficit that occurs when following a particular diet, where x is the number of hours spent exercising.

What is (f + g)(3)?
Show all work and explain your answer

(f+g)(3) = 347 calories

Step-by-step explanation:

f(x) = 2x + 210

g(x) = 2x + 125

(f+g)(x) is the sum of the functions

(f+g)(x) = 2x+210 + 2x+125

Combining like terms

           =4x+335

Now let x = 3

(f+g)(3) = 4*3 +335

            = 12 +335

            = 347

(f+g)(3) = 347 calories

347

Step-by-step explanation:

f(x) = 2x + 210

g(x) = 2x + 125

we know that (f+g)(x)=f(x)+g(x)

so (f+g)(x)= 2x + 210 + 2x + 125 = 4x + 335

(f+g)(3) simply means that x=3

therefore

(f+g)(3) = 12 + 335 = 347

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

thats one

step-by-step explanation: