What is the sample space for choosing a letter of the alphabet that is a vowel?

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

See attachment below and find the equivalent of tan(∠qsr)