6. in the year 1987, an investment was worth $29,800. in the year 1997, this
investment was worth $43,800.
a. find the rate of change of the investment during this time span.

b. is the investment increasing or decreasing?

a 10 percent increase

y=3x+4

step-by-step explanation:

given the points a(0,4) and b(-4, -8)

eqn of line ab: (y-4)/(x-0)=(-8-4)/(-4-0)

(y-4)/x=-12/-4=3

y=3x+4

60°

step-by-step explanation:

the measure angle of c in an isosceles triangle abc is 60° because in isosceles triangle,the measures of all the angles is 60°.