DSST Fundamentals of College Algebra case studies
DSST Fundamentals of College Algebra · Put your knowledge to work in context.
Fundamentals of College Algebra is a DSST exam administered through Prometric test centers and recognized by many colleges and universities for credit-by-examination. The official exam page lists it as a Math exam at Level 3 Baccalaureate worth 3 semester hours, with a minimum passing score of 400. The DSST Fundamentals of College Algebra case studies are 5 cases and about 2,079 words.
1Parallel Impedance and a Meter Tolerance Check
A lab technician is combining two AC impedance measurements in parallel. The measured impedances are Z1 = 6 + 8i ohms and Z2 = 3 − 4i ohms, where i is the imaginary unit.
444 words, about 2 min2Average Cost, Cancellation, and a Removable Discontinuity
A small workshop models average cost per unit with C(x) = (2x² + 7x − 15)/(x + 5), where x is the number of units produced in a batch and C is in dollars. A new spreadsheet uses the simplified expression 2x − 3 for all x, including x = −5, because a formula-audit tool canceled the factor x + 5.
447 words, about 2 min3Negative Exponents in a Declining Balance
A financial planner compares two ways of writing a declining balance. The original model is A(t) = 5000(1 − 0.04)^t, where t is years and the balance is in dollars.
345 words, about 2 min4T-Shirt Profit and a Quadratic Inequality
A student club sells printed T-shirts. Its profit model is P(x) = −3x² + 180x − 1200, where x is the selling price in dollars and P is profit in dollars for a fixed batch.
414 words, about 2 min5Model Rocket Height, Vertex, and Restricted Inverse
A physics class launches a model rocket from ground level. Its height in feet after t seconds is modeled by h(t) = −16t² + 96t for 0 ≤ t ≤ 6, until it returns to the ground.
429 words, about 2 min