Answer:
the answer is (A)
Step-by-step explanation:
Answer:
x (blue circle thing) = 46
y (dna) = -63
z (molecules) = 52
Step-by-step explanation:
Answer:
155
Step-by-step explanation:
5*5=25
((5*13)/2)*4=130
130+25=155
The common difference is 4. U know that the formula is the first term + d(n -1). N-1 is 14 so u know that 14 times a number needs to equal 56 because the first term is -3 and 56-3 is 53. 14 * 4 is 56. So the common difference is 4