What is the y-intercept of the quadratic function y=x2+5x-25?

y- intercept = - 25

Step-by-step explanation:

To find the y- intercept, let x = 0 in the function

y = 0² + 5(0) - 25 = 0 + 0 - 25 = - 25 ← y- intercept

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)