What are the values of a1 and r of the geometric series?

2 - 2 + 2 - 2 + 2

A. a1 = 2 and r = - 2

B. a1 = - 2 and r = 2

C. a1 = - 1 and r = 2

D. a1 = 2 and r = - 1

Yesterday Bethany sent 60 text messages. she said that 15% of those messages were to her best friend. how many text messages did Bethany sent to her friend yesterday. explain your answer!

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C.) y=x2 + 4x - 1 a= b = c. Vertex Axis of Symmetry:

Yoku Is putting on sunscreen. He uses 2 ml to cover 50 cm² of his skin. He wants to know how many milliliters of sunscreen he needs to cover 325 cm² of the skin.

Find the measures of

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