Number 4: line XZ; number 5: theory of congruent triangles.
0=40-10t-5t^2
t^2+2t-8=0
(t+4)(t-2)=0
t=-4 (not a solution) or t=2
Answer: after 2 seconds
The quotient of x and three is 3/x. quotient is a division term and when the dividend is divided by the divisor, the result is a quotient.
Answer:
You are trying to find the x-value when the y-value is 2. On the graph, the x-value is -3 when the y-value is 2. So, the x-value when f(x)=2 is -3.
:)
The rate must be in DECIMAL form and the time must be in YEARS
