Nathan is preheating his oven before using it to bake. The initial temperature of the oven is 65° and the temperature will increase at a rate of 20° per minute after being turned on. What is the temperature of the oven 7 minutes after being turned on? What is the temperature of the oven tt minutes after being turned on?

205°

T(t) = 65°+20°t

Step-by-step explanation:

Let the temperature be T and time be t

The equation to determine the temperature T after t minutes is:

For t = 7 we get:

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8