How can similar triangles help us solve problems on very large, or very small, scales?

The lee family bought their home for $220,000 this year. the equation =220,000(1.038) v = 220 , 000 ( 1 . 038 ) x can be used to find the value, v, of their home after x years. which will be the value of the lee family's home in 5 years?

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)