In a race a speed skater shaved 8/100 of a second off the course best lap tile which decimal represents the time saved

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.

Carley bought a jacket that was discounted 10% off the original price. the expression below represents the discounted price in dollars, based on x, the original price of the jacket.