trigonometric functions

Suppose y=1cos(8x+19)+3 In your answers, enter pi.what is the phase shift?what isthe horizontal shift?I put in the phase shift -19/8 and the horizontal shift -19, but those results were incorrectHelp more


Finding numbers with substitution/elimination

The difference between a 2 digit number and 5 times the sum of its digits is 18. If the tens digit is twice the units digit, what’s the number?

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