(Please answer quick!!) -3(x + 4) – 5(x + 3) is equivalent to -8x+27:
Step 1: -3x+12-5x+15
Step2: -3x+-5x + 12 +15
Step 3: the student made a mistake
I’m which step did the student first make a mistake, and what is a correct expression for that step?
A step 1; -3x + 1 - 5x - 2
B step 1; -3x - 12 - 5x - 15
C step 3; -2x + 27
D step 3; 2x + 27

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.

Adele is five years older than timothy. in three years, timothy will be 2/3 of adele’s age. what is adele‘s current age?