Locate the points in the piecewise function shown below.

-(x+1)^2+2; -infinity < x < -1
f(x)=[ -x+2; -1 < x < infinity
sqrt x-1; 2 < x < infinity
a. x= -1 and 2
b. x= 2
c. x= -1
d. no points of discontinuity

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Me. i can't figure out this question. give an explanation too. .

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?