By mathematical induction 1.2²+2.3²++n(n+1)1=n(n+1)(n+2)(3n+5 )/12

Abag of jelly beans contain 13 pink, green, 20 yellow, 10 black, 7 red, and 11 orange jelly beans. approximately what percent of the jelly beans are pink and yellow?

Given that abcd is a rhombus, what is the value of x?

Josie buys a pair of boots that retail for $52.00 dollars, however they are currently on sale for 25% off how much does josie pay for the boots if there is also a 6% sales tax on them