During a recent blood drive, 18 donors had type o blood. this was 45% of the total number
of donors who gave blood that day. how many donors participated in the blood drive?

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?

What is the length of the segment, endpoints of which are intersections of parabolas y=x^2− 11/4 x− 7/4 and y=− 7 /8 x^2+x+ 31/8 ?