3) the graph of the equation y = x2 + 1 is shown. which equation will shift the graph up 7 units? a) y = x2 + 7 b) y = x2 - 8 c) y = x2 + 8 d) y = (x+7)2

C)

Step-by-step explanation:

the function

Is a parabola that crosses the y-axis at .

So in a function of the form:  , the number indicates the point at which the graph of the function crosses the y-axis.

So, to find a function that is 7 units above, we need to add 7 to the number .

In this case

so adding 7:

So the resulting function, which is 7 units above is:

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