Observe o mosaico, formado por triângulos equiláteros congruentes e quadrados. Determinar a medida do angulo x em graus

Sandy works at a clothing store. she makes $7 per hour plus earns 15% commission on her sales. she worked 75 hours over the last two weeks and had a total of $2,566 in sales before taxes. which of the following is closest to how much she will earn in hourly wages and commission for those two weeks?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

What is the perimeter of an isosceles triangle with each leg measuring 2x+3 and the base measuring 6x-2?