Mr. and mrs. duane share a saving account. there were d dollars in the savings account when mr. duane withdrew $45 from the account. mrs. duane deposited m dollars into the account. then mr. duane deposited an addition $65 into the account.

The following algebraic expression describes this situation:

d - $45 + m + $65.

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)