ΔRAF ~ ΔAMY If A(F) is 10 mm, RF is 15 mm, and MY is 8 mm, AY is ___ mm.

(had to censor the f, my apologies)
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Maria donates a fixed amount, a, to a charity each month. if she donates $300 in 12 months, what is the equation for a? a. a + 300 = 12 b. a × 300 = 12 c. a × 12 = 300 d. a + 12 = 300 e. a + 32 = 100

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.