Can someone please help me on #1 & #3

How many grams must be adde to 970g to make 1 and a half kg

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position