Given below are lease terms at the local dealership. What is the total cash due at signing?
Terms:
• Length of lease: 24 months
• MSRP of the car: $27,500
• Purchase value of the car after lease: $19,500
• Down payment: $3400
• Monthly payment: $425
• Security deposit: $375
• Acquisition fee: $550

(a) x intercepts: -6 and 2

you can obtain these by solving the equation 0=x^2 +4x-12 using your favorite quadratic formula. but it is easy to verify -6 and 2 indeed satisfy this equation.

(b) y intercept: -12

this is obtained by setting x=0: 0^2+4*0-12 = -12

(c) the minimum value is: -16 (this is the vertex)

you can get the vertex by rewriting the equation into the form:

there is no global or local maximum as the function goes to infinity, so only in the limit sense: +infinity.